Hydrocarbon motor



Oct. 12 192e. 1,602,736

L. M. WQOLSON l-{YDROCARBON MOTOR Filed Sept. 26. 1919 2 Sheets--SheeI 1,3W/venan fir/MJL. (LboLSoIL,

Oct. 12 1926.

L. M. WOOLSON HYDROCARBON MOTOR Filed sept. 26, 1919 2 sheets-snee*b MdoLo @dbf/9071.154

Patented Oct. 12., 1926.

UNITED STATES PATENT OFFICE.

LIONEL M. WOOLSON, 0F DETROIT, MICHIGAN, ASSIGNOR 'IO PACKARD MOTOR CABCOMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

HYDROCARBON MOTOR.

Application filed September 26, l1919. Serial No. 326,649.

This invention relates to hydrocarbon motors, and particularly to meansfor heating the mixture passing from the carburetor to the motor.

One of the objects of the invention is to provide a detachable" heaterdevice of the combustion type for the intake pipe of Aa hydrocarbonmotor.

Another object of the invention is to provide a combustion heater devicemade up largely of tubular parts for easy attachment to an intake pipeand for cheapness in manufacture.

Another object of the invention is to proivide a heater device in whichthere -is a circuitous outlet passage from the combustion chamber to themotor intake pipe.

Other objects of the invention will appear from the followingdescription `taken in connection with the drawings, which form a part ofthe specification, and in which:

Figure 1 is a vertical sectional view of the intake pipe of ahydrocarbon motor v and a combustion heater made in accordance a' motorintake pipe and a combustion heater made in accordance with thisinvention, but of slightly different form from that shown in Figure 1;and

Figure 6 is a view similar to Figure 5 illustrating a third form of theinvention.

Referrin to the form of the invention shown in Figures 1, 2, 3 and 4, l0representsa motor intake -pipe or manifold having `a throttle valve 11therein. The intake pipe is shown as substantially square in crosssection and is vertically arranged, though `it will be 'understood thatit may be cylindrical or any other desired` shape and may extend in anyother desired'direction, dependent largely upon the location of thecarburetor of the motor relative to the in? take passages in thecylinder block.

The combustion heater device is arranged in the'intake pipe above thethrottle valve 11 and it is lndicated in general by the numeral 112.- ItcomprisesI two principal pieces 13 and 14 which are threaded together asat 15. 4The piece 13 has a flange 15 and the entire piece is adapted toextend through 'an opening 16 formed in the intake pipe 10. The piece 14has a flange 17 and the entire piece is adapted to extend through anopening 18 formed in the intake together by means of their threadedconnection 15, and by providing suitable washers or gaskets 21 and 22under the flanges 1,5 and 17 respectively, tight joints are made betweenthe pieces 13, 14 and the adbetween the parts 19 and 20 of the pieces13, 14; y

The interior of the piece 14 forms a combustion space 23 which is fed bya combustible mixture from any suitable mixing device through atube 24connected to the outer'end of said piece 14. v

The exterior of the piece 14 where it enters the piece 13 is'slightlysmaller than the interior of the piece 13 and is formed with a spiralrib 25 as shown particularly in Figures 1 and 2. The exterior of thisvrib substantially fits within the piece 13 so that there is formedaspiral space or passage 26 between the periphery of the piece 14 andYthe interior surface of the piece 13. Near one end of the V'passage 26a series of openings or ports 27' are formed in the piece 14 'so thatthe passage 26 communicates with the combustion space 23. At the otherend of the passage`26 there are a series of ports or lopenings 28 formedin the piece 13 so that said passage 26 communicates withthe interior orthe intake pipe 10. Thus it will be seen that the gas which may beburned in the combustion space 23 will expand and pass outwardly intothe intake header 10 throughl the ports 27 the passage 26 and the ports28, thus passing around the piece 14 several times and heating both ityandA the piede 13. The piece 1 3 is provided exterior- 1y with a serieskof finsY or thin flanges 29 to more readily radiate the heat to' thein-v terior ofthe intake header. A l

The inner end of the piece 14 is threaded asat 30 to receive an igniter,shown in the jacent flat sides of the intake pipe 10 and y form ofaspark plug 31 and having its points 32 arranged inside of the chamber23. A Wire 33 connects the 'spark plug with any suitable source ofelectric. energy so the spark may be formed between the points 32 duringthe operation of the motor. It Will be understood that the intake pipe10 and the pipe 24 are connected to suitable carburetors or mixingdevices and that when the motor is to be started and is turned over by asuitable electric starter or otherwise, suction is created in the intakepipe 10 above the throttle 11, thus drawing a small amount of mixturepast the throttle Where it is cracked open as at 34. Suction is alsocreated on the pipe 24 and mixture is drawn into the combustion space 23Where it is red by the spark plug 31. The burning and expanding gasespass through the port 27 and into the passage 26, the Hame of coursebeing extinguished before the ports 28 are reached. The burnt gaseslpass through the ports 28 into the intake pipe 10 Where they mix withthe incoming gas and heat it. Also the burnt gases in passing throughthe passage 26 have. heated the heater 12 so that it also acts as astove to heat the incoming gases. By locating some of the ports 28immediately above the upper part of the throttle valve 11 when it is inits idling position, the greatest amount of heat is immediately appliedto the gases passing through the cracked opening 34.

In the form of the invention shown in Figure 5 the pieces 13 and 14 arethe same as shown in Figure 1, except that the joint at one end is madeby a separately attached piece 40 which has a flange 41 abutting againstthe extreme outer end of the piece 13 and which is secured to the piece14 by a threaded connecting tube 42. Gaskets 43 are' provided to makethe joint tight. The piece 14 is also closed at its outer end as at 44and the piece`40 provides an additional combustion chamber 45 into whichthe pipe 24 feeds the combustible mixture for the heater. The spark plug31 is arranged in the piece 40 so that its points 32 are adjacent thedischarge end of the pipe 24 to thereby readily ignite the mixture.

A glass Window 46 is Vprovided in the piece 40 opposite the spark plug31 sothat the operation of the device may be observed.

In this illustration of the device the intake pipe l0 is shown inhorizontal section and its approximately square cross section may bemorereadily-seen. The mixture enters the combustion chamber 45 throughthe pipe 24 andv is fired by the spark plug 31. It then passes into thechamber 23 and into the intake pipe 10 through the ports 27, the spiralpassage 26 and the ports 23. In the third form of the invention shown inFigure 6, the pieces13 and 14 are the same as shown in Figure 5 andtheseparately attached piece 40 is also similar. It is secured to thepiece 13 by a similar Bange 41 and there is the same spark plug 31.

The combustible mixture pipe 24, hoW- ever, feeds into the interior ofthe piece 40 somewhat differently from either of the other forms.Instead of being attached directly to the piece 40, the pipe 24 isthreaded into the outer end of the piece 14 as at and an extension tube61 carries the mixture from this point to the interior of the piece 40and discharges it adjacent the points 32 of the spark plug.

By this construction there is a preheating of the combustible mixturedue to the fact that it is carried entirely through the combustion space23 in Which the gases are tired. This is of some advantage in connectionwith the use of heavier fuels.

It Will be understood that other forms may be designed and used Withoutdeparting from the spirit or scope of the invention.

Having thus described my invention, What I claim and desire to secure byLetters Patent is:

1. A heater device comprising a plug part .mixture to said attachedpart, said means comprising a tube passing through the plug part of theheater device.

3. In a hydrocarbon motor, the combination with the motor intake pipeextending from the carburetor to the cylinders, of a combustion chamberarranged in heat transferringrelation to said intake pipe andhaving anoutlet into said intake pipe, an igniter at one end of said chamber,means for feeding a heated combustible mixture to said chambercomprising a supply pipe extending .through the chamber and having itsdischarge opening in the chamber adjacent said igniter.

4. A heater plug comprising amain combustion chamber and an extensionforming a circuitous outlet passage about the combustion chamber.

5. The combination with an engine intake pipe, of a heater plug adaptedto be. inserted Within said pipe, said plug comprising a main combustionchamber and an extension formingv a circuitous outlet passage around thecombustion chamber and Within said pipe.

6. The combination with an engine intake immediately pipe, of a heaterdevice comprising two parts extending into said pipe from opposite sidesand telescoped together, the inner of said parts forming a combustionchamber, and the'outer of said parts having radiating fins in the intakepipe.

7. The combination with an engine intake pipe, of a heater devicecomprising two parts extending into said pipe from oppo site sides andtelescoped together, means for feeding a combustible mixture into saiddevice, and means for igniting the mixture therein. y

8. In. a hydrocarbon motor, the combination with an intake pipe ofsubstantially square cross section, of a combustion heater deviceconnected to discharge into said pipe and comprising two telescopedparts extending into the pipefrom opposite sides, each of said partshaving fiangesy arranged against the two ,opposite fiat sides of theintake pipe, and meansfor feeding a combustible mixture to said heaterdevice.

9. The combination with an engine intake pipe, of a heater devicecomprising te1escoped tubular parts arranged in the intake pipe so thatthe mixture passing therethrough will come in Contact with the exteriorof the outer of saidtubular parts, the inner of said tubular partsforming a combustion chamber and the space between the parts forming theoutlet passage therefrom.

10. Thecombination with an engine intake pipe, of a heater devicecomprising two telescoped pieces, said device being arranged in theinftake pipe so that the mixture passing therethrough will dome incontact with the exterior of the outer of saidtubular parts, thev innerof said pieces forming a combustion chamberpand lthe space between thepieces forming the outer passage from said chamber, and said devicecomprising a third piece secured to one of the telescoped pieces andforming a continuation of the combustion chamber.

In testimony whereof I aiix my signature;

LIONEL M. WooLsoN.

